1-7 March 2021
Novosibirsk, Time zone GMT+7
Zoom-Conference
Novosibirsk, Time zone GMT+7
Zoom-Conference
The 4th Workshop on
«Algebraic Graph Theory and its Applications»
«Algebraic Graph Theory and its Applications»
Mathematical Center in Akademgorodok
About Workshop
The main goal of the workshop is to embrace recent results in developing Algebraic Graph Theory and its Applications. We are interested in structural and spectral characterization of highly regular graphs, investigating graphs defined on groups, computing coherent closures of graphs, constructing new codes and designs.
The previous workshops:
http://mca.nsu.ru/atg3_2020/
http://mca.nsu.ru/atg2020/
http://mca.nsu.ru/atg2019en/
The previous workshops:
http://mca.nsu.ru/atg3_2020/
http://mca.nsu.ru/atg2020/
http://mca.nsu.ru/atg2019en/
The list of participants
Aida Abiad
Eindhoven University of Technology,
the Netherlands
the Netherlands
Thangaraj Asir
Madurai Kamaraj University,
India
India
Rosemary Bailey
University of St Andrews,
UK
UK
Ravil Bildanov
Novosibirsk State University,
Russia
Russia
Peter J. Cameron
University of St Andrews,
UK
UK
Dmitry Churikov
Sobolev Institute of Mathematics,
Russia
Russia
Dean Crnković
University of Rijeka,
Croatia
Croatia
Edwin van Dam
Tilburg University, the Netherlands
Andrey Dobrynin
Sobolev Institute of Mathematics,
Russia
Russia
Rhys Evans
Queen Mary University of London,
UK
UK
Yanquan Feng
Beijing Jiaotong University,
China
China
Alexander Gavrilyuk
Shimane University,
Japan
Japan
Sergey Goryainov
Chelyabinsk State University,
Russia
Russia
Štefan Gyürki
Slovak University of Technology,
Bratislava, Slovakia
Bratislava, Slovakia
Willem Haemers
Tilburg University,
the Netherlands
the Netherlands
Kristina Ilenko
Krasovskii Institute of Mathematics
and Mechanics, Russia
and Mechanics, Russia
Yu Jiang
Sobolev Institute of Mathematics,
Russia & Nanyang Technological University,
Singapore
Russia & Nanyang Technological University,
Singapore
Vladislav Kabanov
Krasovskii Institute of Mathematics
and Mechanics, Russia
and Mechanics, Russia
Ekaterina Khomyakova
Novosibirsk State University, Russia
Jack Koolen
University of Science and Technology
of China, Anhui, China
of China, Anhui, China
Elena Konstantinova
Sobolev Institute of Mathematics & Novosibirsk
State University, Russia
State University, Russia
István Kovács
University of Primorska,
Slovenia
Slovenia
Honghai Li
Jiangxi Normal University, Nanchang,
China
China
Natalia Maslova
Krasovskii Institute of Mathematics
and Mechanics, Russia
and Mechanics, Russia
Nikolay Minigulov
Krasovskii Institute of Mathematics
and Mechanics, Russia
and Mechanics, Russia
Ivan Mogilnykh
Sobolev Institute of Mathematics,
Novosibirsk, Russia
Novosibirsk, Russia
Akihiro Munemasa
Tohoku University, Japan
Mikhail Muzychuk
Ben-Gurion University of the Negev,
Israel
Israel
Dmitry Panasenko
Chelyabinsk State University, Russia
Viktor Panshin
Novosibirsk State University,
Russia
Russia
Ilia Ponomarenko
Petersburg Department of V. A. Steklov
Institute of Mathematics, Saint Petersburg,
Russia
Institute of Mathematics, Saint Petersburg,
Russia
Danila Revin
Sobolev Institute of Mathematics,
Russia
Russia
Grigory Ryabov
Sobolev Institute of Mathematics,
Russia
Russia
Leonid Shalaginov
Chelyabinsk State University,
Russia
Russia
Saveliy Skresanov
Sobolev Institute of Mathematics,
Russia
Russia
Sho Suda
National Defense Academy,
Japan
Japan
Andrea Švob
University of Rijeka,
Croatia
Croatia
Pascal Schweitzer
TU Kaiserslautern/TU Darmstadt,
Germany
Germany
Oleg Verbitsky
Humboldt University of Berlin,
Germany
Germany
Andrey Vasil'ev
Sobolev Institute of Mathematics,
Russia
Russia
Yaokun Wu
Shanghai Jiao Tong University,
China
China
Paul-Hermann Zieschang
University of Texas Rio Grande Valley,
USA
USA
Da Zhao
Shanghai Jiao Tong University,
China
China
Jin-Xin Zhou
Beijing Jiaotong University,
China
China
Workshop Schedule
1-7 March 2021
Novosibirsk, Time zone GMT+7
Zoom-Conference https://zoom.us/j/2884353200
Novosibirsk, Time zone GMT+7
Zoom-Conference https://zoom.us/j/2884353200
1 March,
zoom-conference
zoom-conference
15:00 – 16:00 — Edwin van Dam, Several adjacency matrices for digraphs and their spectra
16:00 – 17:00 — Jack Koolen, Improving the Delsarte bound
17:00 – 18:00 — Akihiro Munemasa, Neighbor-balanced bijections of hypercubes
16:00 – 17:00 — Jack Koolen, Improving the Delsarte bound
17:00 – 18:00 — Akihiro Munemasa, Neighbor-balanced bijections of hypercubes
2 March,
zoom-conference
zoom-conference
15:00 – 16:00 — Oleg Verbitsky, Weisfeiler-Leman invariance and the quality of linear programming relaxation
16:00 – 17:00 — Pascal Schweitzer, Deep Weisfeiler-Leman for graphs and other structures
17:00 – 18:00 — Štefan Gyürki, About the Paulus-Rozenfeld-Thompson graph
18:00 – 19:00 — Alexander Gavrilyuk, On distance-regular graphs with classical parameter b=2
16:00 – 17:00 — Pascal Schweitzer, Deep Weisfeiler-Leman for graphs and other structures
17:00 – 18:00 — Štefan Gyürki, About the Paulus-Rozenfeld-Thompson graph
18:00 – 19:00 — Alexander Gavrilyuk, On distance-regular graphs with classical parameter b=2
3 March,
zoom-conference
zoom-conference
15:00 – 16:00 — Dean Crnković, Divisible design Cayley graphs and digraphs
16:00 – 17:00 — Andrea Švob, Transitive distance-regular graphs and related codes
17:00 – 17:30 — Vladislav Kabanov, On Deza graphs with parameters (v,k,k-3,a)
17:30 – 18:00 — Dmitry Panasenko, Enumeration of divisible design graphs
18:00 – 18:30 — Honghai Li, Polynomials and spectral radius of hypergraphs
18:30 – 19:00 — Ivan Mogilnykh, Perfect codes from PGL(2,5) in Star graphs
16:00 – 17:00 — Andrea Švob, Transitive distance-regular graphs and related codes
17:00 – 17:30 — Vladislav Kabanov, On Deza graphs with parameters (v,k,k-3,a)
17:30 – 18:00 — Dmitry Panasenko, Enumeration of divisible design graphs
18:00 – 18:30 — Honghai Li, Polynomials and spectral radius of hypergraphs
18:30 – 19:00 — Ivan Mogilnykh, Perfect codes from PGL(2,5) in Star graphs
4 March,
zoom-conference
zoom-conference
15:00 – 16:00 — Thangaraj Asir, Cohen-Macaulay graphs
16:00 – 17:00 — Peter J. Cameron, The Gruenberg-Kegel graph and graphs defined on groups
17:00 – 18:00 — Natalia Maslova, On recognition of a finite group by its Gruenberg-Kegel graph
18:00 – 18:30 — Kristina Ilenko, On coincidence of Gruenberg-Kegel graphs of some non-isomorphic finite groups
18:30 – 19:00 — Nikolay Minigulov, On finite groups which Gruenberg-Kegel graphs are isomorphic to the paw
16:00 – 17:00 — Peter J. Cameron, The Gruenberg-Kegel graph and graphs defined on groups
17:00 – 18:00 — Natalia Maslova, On recognition of a finite group by its Gruenberg-Kegel graph
18:00 – 18:30 — Kristina Ilenko, On coincidence of Gruenberg-Kegel graphs of some non-isomorphic finite groups
18:30 – 19:00 — Nikolay Minigulov, On finite groups which Gruenberg-Kegel graphs are isomorphic to the paw
5 March,
zoom-conference
zoom-conference
15:00 – 16:00 — Willem Haemers, The chromatic index of strongly regular graphs
16:00 – 17:00 — Aida Abiad, Neumaier graphs with few eigenvalues
17:00 – 18:00 — Sho Suda, Distance sets in pseudo-Euclidean R^{p,q} spaces
18:00 – 19:00 — István Kovács, Cayley integral graphs and groups
16:00 – 17:00 — Aida Abiad, Neumaier graphs with few eigenvalues
17:00 – 18:00 — Sho Suda, Distance sets in pseudo-Euclidean R^{p,q} spaces
18:00 – 19:00 — István Kovács, Cayley integral graphs and groups
6 March,
zoom-conference
zoom-conference
15:00 – 16:00 — Paul-Hermann Zieschang, Results on hypergroups
16:00 – 17:00 — Mikhail Muzychuk, Sylow branching coefficients and solvability of finite groups
17:00 – 17:30 — Dmitry Churikov, Totally k-closed abelian groups
17:30 – 18:00 — Grigory Ryabov, Classification of abelian Schur groups
18:00 – 18:30 — Yu Jiang, On p′-valenced association schemes
16:00 – 17:00 — Mikhail Muzychuk, Sylow branching coefficients and solvability of finite groups
17:00 – 17:30 — Dmitry Churikov, Totally k-closed abelian groups
17:30 – 18:00 — Grigory Ryabov, Classification of abelian Schur groups
18:00 – 18:30 — Yu Jiang, On p′-valenced association schemes
7 March,
zoom-conference
zoom-conference
15:00 – 16:00 — Rosemary Bailey, Substitutes for the non-existent square lattice designs for 36 treatments
16:00 – 17:00 — Yaokun Wu, Grid points: density and pattern
17:00 – 17:30 — Da Zhao, Color refinement on digraphs
Open problem session
17:30 – 18:00 — Elena Konstantinova, Three problems on Cayley graphs
18:00 – 18:15 — Peter J. Cameron, 3-tuple regular graphs
18:15 – 18:30 — Natalia Maslova, Problems of characterization of a finite group by its Gruenberg-Kegel graph
Closing
16:00 – 17:00 — Yaokun Wu, Grid points: density and pattern
17:00 – 17:30 — Da Zhao, Color refinement on digraphs
Open problem session
17:30 – 18:00 — Elena Konstantinova, Three problems on Cayley graphs
18:00 – 18:15 — Peter J. Cameron, 3-tuple regular graphs
18:15 – 18:30 — Natalia Maslova, Problems of characterization of a finite group by its Gruenberg-Kegel graph
Closing
Contacts
We adore mail!
Mathematical Center
in Akademgorodok
in Akademgorodok
mca@nsu.ru
Elena Konstantinova
Organizer
e_konsta@math.nsc.ru
e_konsta@math.nsc.ru
Grigory Ryabov
Organizer
gric2ryabov@math.nsc.ru
gric2ryabov@math.nsc.ru
Supported by the Mathematical Center in Akademgorodok under agreement No. 075-15-2019-1675 with the Ministry of Science and Higher Education of the Russian Federation